对可能影响农产品质量安全的农药、兽药、饲料和饲料添加剂、肥料、兽医器械，依照有关法律、行政法规的规定实行许可制度。
参考答案：对
The chief manger, together with all the construction workers, _______ working on the bridge day and
night to finish it before the storm season comes.
A. was
B. were
C. is
D. are
密闭式膀胱冲洗输液瓶要高于骨盆
A．40 cm
B．60 cm
C．80 cm
D．100 cm
E．120 cm
